Published November 20, 2017
| Version Published
Journal Article
Open
Search for Optical Pulsation in M82 X-2
Creators
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1.
University of California, Santa Barbara
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2.
Dominican School of Philosophy and Theology
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3.
California Institute of Technology
Abstract
We report on a search for optical pulsation from M82 X-2 over a range of periods. M82 X-2 is an X-ray pulsar with a 1.37s average spin period and a 2.5 day sinusoidal modulation. The observations were done with the ARray Camera for Optical to Near-IR Spectrophotometry at the 200 inch Hale telescope at the Palomar Observatory. We performed H test and χ^2 statistical analysis. No significant optical pulsations were found in the wavelength range of 3000–11000 Å with a pulsation period between 1.36262 and 1.37462 s. We found an upper limit on pulsed emission in the 4000–8000 Å wavelength range to be fainter than ~20.5 mag_(AB) , corresponding to ~23 μJy.
Additional Information
© 2017 The American Astronomical Society. Received 2017 July 25; revised 2017 October 10; accepted 2017 October 13; published 2017 November 17. This material is based upon work supported by the National Science Foundation under grant No. AST-1411613. Observations were made using the Palomar 200 inch Hale Telescope of the Caltech Optical Observatories. We are pleased to acknowledge the Palomar Observatory staff for their enthusiastic and excellent support.Attached Files
Published - Collura_2017_ApJ_850_65.pdf
Files
Collura_2017_ApJ_850_65.pdf
Additional details
Identifiers
- Eprint ID
- 83803
- Resolver ID
- CaltechAUTHORS:20171211-124441481
Funding
- NSF
- AST-1411613
Dates
- Created
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2017-12-12Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- Astronomy Department